The Ur-Quan Kzer-Za are one of two subraces of Ur-Quan. They are nearly identical to their Ur-Quan Kohr-Ah brethren, the main difference being that their skin is green rather than black. Their race was genetically engineered by the Dnyarri from the main line of the Ur-Quan during the height of the Dnyarri Slave Empire. The Kzer-Za were designed to be the "thinkers," the scientists, technicians, and overseers of the Empire.
The Dnyarri did not name their creation. It was not until after the slave revolt that the Kzer-Za named themselves in honor of the martyred Kzer-Za, who discovered the secret of their freedom.
The Kzer-Za follow the Path of Now and Forever. This doctrine states that they must seek out all sentient life and offer them a choice: imprisonment or enslavement. The Kzer-Za are aware that this way of life may be incorrect and so they willingly participate in the Doctrinal Conflict with the Kohr-Ah.
For several thousand years they have circled the galaxy, enslaving races into their Hierarchy or imprisoning them under slave shields. Even one battle in their long history is an extreme situation in the eyes of a younger race. The First War that most contemporary races speak of was, to the Kzer-Za, just another of a thousand conquests.
The Ur-Quan Kzer-Za do battle in their Dreadnought starships.